//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
//                                                                        \\
//                 Centre for Speech Technology Research                  \\
//                      University of Edinburgh, UK                       \\
//                        Copyright (c) 1996,1997                         \\
//                         All Rights Reserved.                           \\
//   Permission is hereby granted, free of charge, to use and distribute  \\
//   this software and its documentation without restriction, including   \\
//   without limitation the rights to use, copy, modify, merge, publish,  \\
//   distribute, sublicense, and/or sell copies of this work, and to      \\
//   permit persons to whom this work is furnished to do so, subject to   \\
//   the following conditions:                                            \\
//    1. The code must retain the above copyright notice, this list of    \\
//       conditions and the following disclaimer.                         \\
//    2. Any modifications must be clearly marked as such.                \\
//    3. Original authors' names are not deleted.                         \\
//    4. The authors' names are not used to endorse or promote products   \\
//       derived from this software without specific prior written        \\
//       permission.                                                      \\
//   THE UNIVERSITY OF EDINBURGH AND THE CONTRIBUTORS TO THIS WORK        \\
//   DISCLAIM ALL WARRANTIES With REGARD TO THIS SOFTWARE, INCLUDING      \\
//   ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT   \\
//   SHALL THE UNIVERSITY OF EDINBURGH NOR THE CONTRIBUTORS BE LIABLE     \\
//   FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES    \\
//   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN   \\
//   AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,          \\
//   ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF       \\
//   THIS SOFTWARE.                                                       \\
//                                                                        \\
//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
//                                                                        \\
//                  Author: Richard Caley (rjc@cstr.ed.ac.uk)             \\
//  --------------------------------------------------------------------  \\
//  Record of a request made to a session.                                \\
//                                                                        \\
//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\

package interactivespaces.service.speech.synthesis.internal.festival.client;

import java.util.Vector;

public class Request {
  public String command;
  public Integer id;
  public Session session;

  private Vector results;
  protected boolean running = false;
  protected String error = null;
  protected boolean finished = false;

  private RequestListener listener;

  public Request(String c, Integer i, Session s) {
    command = c;
    id = i;
    session = s;

    results = new Vector(1);
  }

  public synchronized boolean isFinished() {
    return finished;
  }

  public synchronized void waitForUpdate() {
    try {
      wait();
    } catch (InterruptedException e) {
    }
    // System.out.println("wait done");
  }

  public synchronized void notifyResult(Object r) {
    results.addElement(r);
    if (listener != null)
      listener.requestResult(this, r);
    notifyAll();
  }

  public synchronized void notifyRunning() {
    running = true;
    if (listener != null)
      listener.requestRunning(this);
    notifyAll();
  }

  public synchronized void notifyError(String message) {
    error = message;
    if (listener != null)
      listener.requestError(this, message);
    notifyAll();
  }

  public synchronized void notifyFinished() {
    finished = true;
    if (listener != null)
      listener.requestFinished(this);
    notifyAll();
  }

  public synchronized void addRequestListener(RequestListener l) {
    listener = l;

    if (running)
      l.requestRunning(this);
    for (int i = 0; i < results.size(); i++)
      l.requestResult(this, results.elementAt(i));
    if (error != null)
      l.requestError(this, error);
    if (finished)
      l.requestFinished(this);
  }

  public synchronized void removeRequestListener(RequestListener l) {
    if (listener == l)
      listener = null;
  }
}
